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Diffstat (limited to 'user_guide/general/common_functions.html')
| -rw-r--r-- | user_guide/general/common_functions.html | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/user_guide/general/common_functions.html b/user_guide/general/common_functions.html index df5dfea6e..980a5a969 100644 --- a/user_guide/general/common_functions.html +++ b/user_guide/general/common_functions.html @@ -58,8 +58,11 @@ Auto-loading Resources <h1>Common Functions</h1> <p>CodeIgniter uses a few functions for its operation that are globally defined, and are available to you at any point. These do not require loading any libraries or helpers.</p> + <h2>is_really_writable('<var>path/to/file</var>')</h2> + <p>is_writable() returns TRUE on Windows servers when you really can't write to the file as the OS reports to PHP as FALSE only if the read-only attribute is marked. This function determines if a file is actually writable by attempting to write to it first. Generally only recommended on platforms where this information may be unreliable.</p> + <code>if (is_really_writable('file.txt'))<br /> {<br /> echo "I could write to this if I wanted to";<br /> @@ -68,11 +71,25 @@ else<br /> {<br /> echo "File is not writable";<br /> }</code> + <h2>config_item('<var>item_key</var>')</h2> <p>The <a href="../libraries/config.html">Config library</a> is the preferred way of accessing configuration information, however config_item() can be used to retrieve single keys. See Config library documentation for more information.</p> + <h2>show_error('<var>message</var>'), show_404('<var>page</var>'), log_message('<var>level</var>', '<samp>message</samp>')</h2> <p>These are each outlined on the <a href="errors.html">Error Handling</a> page.</p> + +<h2>set_status_header(<var>code</var>, '<var>text</var>');</h2> + +<p>Permits you to manually set a server status header. Example:</p> + +<code>set_status_header(401);<br /> +// Sets the header as: Unauthorized</code> + +<p><a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html">See here</a> for a full list of headers.</p> + </div> + + <!-- END CONTENT --> |